#include <iostream>
#include <string>
#include <websocketpp/server.hpp>
#include <websocketpp/config/asio_no_tls.hpp>

typedef  websocketpp::server<websocketpp::config::asio> wsserver_t;

void http_callback(wsserver_t *srv,websocketpp::connection_hdl hdl)
{
    //给客户端返回一个hello world 页面
    wsserver_t::connection_ptr conn = srv->get_con_from_hdl(hdl);
    std::cout << "body: " << conn->get_request_body() << std::endl;
    websocketpp::http::parser::request req = conn->get_request();
    std::cout << "method: " << req.get_method() << std::endl;
    std::cout << "uri: " << req.get_uri() << std::endl; 

    std::string body = "<html><body><h1>Hello World</h1></body></html>";
    conn->set_body(body);
    conn->append_header("Content-Type","text/html");
    conn->set_status(websocketpp::http::status_code::ok);
}

void wsopen_callback(wsserver_t *srv,websocketpp::connection_hdl hdl)
{
    std::cout << "websocket 握手成功！！\n";
}

void wsclose_callback(wsserver_t *srv,websocketpp::connection_hdl hdl)
{
    std::cout << "websocket 连接断开！！\n";
}

void wsmsg_callback(wsserver_t *srv,websocketpp::connection_hdl hdl,wsserver_t::message_ptr msg)
{
    wsserver_t::connection_ptr conn = srv->get_con_from_hdl(hdl);
    std::cout << "wsmsg: " << msg->get_payload() << std::endl;
    std::string rsp = "client say:" + msg->get_payload() ;
    conn->send(rsp,websocketpp::frame::opcode::text);
}

int main()
{
    //1. 实例化server对象
    wsserver_t wssrv;
    //2. 设置日志等级
    wssrv.set_access_channels(websocketpp::log::alevel::none);
    //3. 初始化asio调度器
    wssrv.init_asio();
    wssrv.set_reuse_addr(true);
    //4. 设置回调函数
    wssrv.set_http_handler(std::bind(http_callback,&wssrv,std::placeholders::_1));
    wssrv.set_open_handler(std::bind(wsopen_callback,&wssrv,std::placeholders::_1));
    wssrv.set_close_handler(std::bind(wsclose_callback,&wssrv,std::placeholders::_1));
    wssrv.set_message_handler(std::bind(wsmsg_callback,&wssrv,std::placeholders::_1,std::placeholders::_2));
    //5. 设置监听端口
    wssrv.listen(8085);
    //6. 开始获取新链接
    wssrv.start_accept();
    //7. 启动服务器
    wssrv.run();

    return 0;
}